This author has not been identified. Look up 'Matteo Lissandrini' in GoogleThis author has not been identified. Look up 'Davide Mottin' in GoogleThis author has not been identified. Look up 'Themis Palpanas' in GoogleThis author has not been identified. Look up 'Dimitra Papadimitriou' in GoogleThis author has not been identified. It may be one of the following persons: Look up 'Yannis Velegrakis' in Google